BIRDS OF NORTH AND MIDDLE AMERICA 165 



deep mouse gray; chin and middle of throat white, with the lateral 

 and posterior feathers edged with deep mouse gray giving a checkered 

 appearance to these areas ; breast dull grayish white laterally darken- 

 ing to deep mouse gray sometimes sprinkled with dull hazel or cinna- 

 mon feathers, (and sometimes practically completely crossed by a 

 band of the same) ; middle of abdomen white indistinctly barred with 

 blackish posteriorly; sides of abdomen very dark hair brown to 

 grayish fuscous crossed by very narrow bars of dull whitish; thighs 

 smoke gray with very indistinct bars of slightly paler; under tail 

 coverts black with narrow white bars; under wing coverts as in adult; 

 iris dark brown ; bill blackish above, pea green below, dusky mesially ; 

 tarsi and toes olive-green. 



Natal down. — A young bird in an early stage of postnatal molt is 

 black above, with a greenish gloss on the head, and, to a much lesser 

 extent, on the lower back ; duller black below, with a grayish wash on 

 the median under surface, particularly on the abdomen. Juvenal 

 feathers just coming out on the abdomen and breast are dull gray 

 broadly tipped with dull black. 



Adult ma?e.— Wing 69-76 (73.5) ; tail 23-33 (26.5) ; exposed 

 culmen 16.5-19 (18) ; tarsus, 27.5-32 (29.4) ; middle toe without claw, 

 29-35.5 (31.5 mm.). «- 



Adult female.— W'mg 68.5-77 (73.7) ; tail 22.5-28 (22.4) ; exposed 

 culmen 15.5-18 (16.6) ; tarsus 26-31.5 (28.3) ; middle toe without 

 claw 28-32 (30.1mm.).«3 



Range. — Resident from Nicaragua (Rio Escondido; Greytown, 

 Bluefields; Los Sabalos) south through northern and eastern Costa 

 Rico (Bonilla; Cache; Cariblanco de Sarapiqui; Carrillo; Desam- 

 parados; Guapiles; Jimenez; Juan Viiias; Pacuare; Pacuarito; 

 Reventazon; Rio Frio; Talamanca) ; to the Chiriqui Lagoon in 

 western Panama (x4.1mirante, Changuinola, Fruitdale, Guabo). 



Tyjye locality. — Talamanca, Costa Rica. 



Corethrura alMgularis (not of Lawrence, 1862) Sclatee and Salvin, Proc. Zool. 



Soc. London, 1864, 372, part. 

 Porzana alMgularis Sclateb and Salvin, Proc. Zool. Soc. London. 1867. 280 



(Bluefields River, e. Nicaragua) ; 1868, 454, part (Nicaragua; Costa Rica) ; 



Exotic Orn., 1868, 109. part.— Salvin, Ibis, 1872, 313 (Nicaragua).— Rtdg- 



WAY, Proc. U. S. Nat. Mus., iv, 1881, 201, part (Costa Rica ; Mosquito Coast, 



Nicaragua). 

 [Porzana'\ alMgularis Sclateb and Salvin, Nom. Av. Neotr., 1873, 140, part 



(Nicaragua). 

 [Aramides'\ alMgularis Gray, Hand-list, iii, 1871, 61, No. 10442, part. 

 Creciscus alMgularis Sharpe, Cat. Birds Brit. Mus., xxiii, 1894, 140, part 



(Nicaragua). 



^ Eighteen specimens from Nicaragua, Costa Rica, and Panama, including 

 the type of leucogastra Ridgway. 



'^" Nine specimens from Nicaragua, Costa Rica, and Panama, including the 

 type of cinereiceps. 



